二に重じゅう母ぼ音いん

noun

diphthong

Linguistics term for a vowel sound that glides from one vowel to another within a single syllable, such as the 'ai' in 'aisatsu'.

• 英えい語ごの「time」の「i」は二に重じゅう母ぼ音いんです。

  The 'i' in the English word 'time' is a diphthong.

• 日本にほん語ごの「愛あい」は二に重じゅう母ぼ音いんを含ふくんでいます。

  The Japanese word 'ai' contains a diphthong.